zong m811 tested paid frimware Available here

[muskanjee]

 

[Kashi Lucky]

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Download Android Jelly Bean 4.3 stock firmware for China Mobile Zong M811 All-rounder
Firmware details
Archive name: M811_4.3_20160904
Image: M811_SJJL_ROM_20160904A & M811_SJJL_ROM_20160904B
Archive file size: 654 MB
Support: Qualcomm Snapdragon 400 MSM8926
Build number: m811-user 4.3 JLS36C M811_01.50.00RPS

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[muskanjee]

Check Firnmware Free

[/B]
[B]Download Android Jelly Bean 4.3 stock firmware for China Mobile Zong M811 All-rounder
Firmware details
Archive name: M811_4.3_20160904
Image: M811_SJJL_ROM_20160904A & M811_SJJL_ROM_20160904B
Archive file size: 654 MB
Support: Qualcomm Snapdragon 400 MSM8926
Build number: m811-user 4.3 JLS36C M811_01.50.00RPS

Download

How to flash with this frimware?